package org.juggers.services;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.util.ArrayList;
import java.util.List;

import javax.persistence.NoResultException;

import org.juggers.domain.UserGroup;
import org.springframework.security.annotation.Secured;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

/**
 * @author <a href="mailto:michel@breizhjug.org">Michel DAVID</a>
 */
@Service( "userGroupService" )
public class DefaultUserGroupService
    implements UserGroupService
{

    @Override
    @Transactional
    @Secured( { "ROLE_ADMIN" } )
    public UserGroup create( UserGroup userGroup )
    {
        userGroup.persist();
        return userGroup;
    }

    @Override
    public UserGroup get( Long id )
    {
        try
        {
            return UserGroup.findById( id );
        }
        catch ( NoResultException ex )
        {
            return null;
        }
    }

    @Override
    @Transactional
    public List<UserGroup> getUserGroups()
    {
        return new ArrayList<UserGroup>( UserGroup.findAll() );
    }

    @Override
    @Transactional
    @Secured( { "ROLE_ADMIN", "ROLE_JUG_ADMIN" } )
    public UserGroup update( UserGroup userGroup )
    {
        return userGroup.merge();
    }

}
